This thread is over 3 years old. so- Not sure which camera the OP repaired.
FWIW, the Retina Automatic III is easy to work on. The top pops off with 3 screws after undoing the rewind Knob. Never replaced the seals on mine. The Xenar is a nice low-contrast lens, on par with an Elmar. The Lightmeter works in mine, and is accurate. Gossen made the meter.
And the OP still signs onto RFF occasionally. Would like to see what he ended up doing...
FWIW, the Retina Automatic III is easy to work on. The top pops off with 3 screws after undoing the rewind Knob. Never replaced the seals on mine. The Xenar is a nice low-contrast lens, on par with an Elmar. The Lightmeter works in mine, and is accurate. Gossen made the meter.
And the OP still signs onto RFF occasionally. Would like to see what he ended up doing...